| 摘要 |
Provided is a power conversion system, wherein an operation to mitigate resonance is more efficiently performed when the frequency of a ripple current flowing in a direct current power source supply line becomes equal to the resonant frequency of an LC filter. In an LC filter (10) connected between a direct current power source (1) and an inverter circuit (3), an N channel MOSFET (11) is disposed between a capacitor (9) and a ground of the filter (10). If a BPF (12) detects that resonance is occurring in the LC filter (10), then an inverting amplifier (15) causes the N channel MOSFET (11) to operate so as to change the series resistance value of the path where the capacitor (9) is disposed. |
